In the 1835 Molotschna Colony Census he is listed at Prangenau #18, where he is said to have come to Russia in 1819 and to have moved to Prangenau in 1824 from Pastwa. This is confirmed by the census entry for him at Pastwa #19. In the 1847 Molotschna Colony Voters List he is listed at Prangenau #19. One record says he died 27 Nov 1867. The online index to Zionsbote suggests either he died Sparrau or the report of his death came from Sparrau. See also Zionsbote 29 Mar 1899 p3 for a Johann (Schw.) Heinrichs who may be connected to this man. Could his death be in a Mennonitische Rundschau obituary 15 Apr 1896 p2 column 1?